质子探针分析方法研究矿石中微细粒金的赋存状态：以皖中沙溪斑岩铜（金）矿床为例

本文应用先进的微束分析技术－质子探针分析方法对安徽中部沙溪斑岩铜（金）矿床中金的赋存状态进行系统的研究。结果表明，该斑岩铜（金）床中金的赋存状态以微细粒微米级的自然金形式存在，其载体矿物主要为黄铁矿和黄铜矿。本研究对斑岩铜（金）矿床中金的综合利用提供了理论上的依据，同时也为其它同类矿床中金的赋存状态提供了新的研究方法。

STUDY ON THE OCCURRENCE OF MICROGRAINED GOLD IN MINERALS BY APPLICATION OF PROTON AND NUCLEAR MICROPROBES AS EXEM PLIFIED BY SHAXI PORPHYRY C0PPER AND GOLD DEPOSIT,ANHUI

Shaxi Porphyry copper deposit, located in the central Anhui Province, eastern China, is one of the important discoveries in the middle—lower Yantse reaches in mid-1980s’. Gold mineralization also widely exists in the deposit. However, the occurrence of gold is not fully investigated and remains unknown at present. In this paper-gold occurrence has been studied by application of proton and nuclear microprobes in PIXE system. It shows that the gold in the porphyry copper deposit mainly occurs as micro-grained native gold with μm grade, and the host minerals of gold an mainly pyrite and chalcopyrite. The results provide the theoretical evidence for the synthetical utilization of gold in porphyry copper deposits and a new method for the study of gold occurrence in other similar ore deposits.